Steel Adapter, 0.75 Inch Code 61 Split Flange To 1-1/16-12 Male JIC 37 deg Flare, Straight (For pressures thru 4 Light Spiral Hose)

That connection is exactly what this adapter handles. One end is a 0.75 inch Code 61 split flange, and the other is a 1-1/16-12 male JIC 37 degree flare, so it bridges those two fitting types in a straight configuration. It's rated for pressures through 4 light spiral hose, which covers a solid range of industrial hydraulic work. No thread sealant is needed on installation, which saves a step and keeps things cleaner.

This steel adapter is rated to handle pressures associated with systems using up to 4 light spiral hose. So, it should be suitable for your application.